Translation guide
A chair designed for use at a desk, typically for studying or office work. In Japanese, the most common term is 椅子 (isu), but more specific terms exist depending on context.
A chair used at a desk for studying or office work.
The most common and general word for 'chair'. In context, it is understood as a desk chair when used in an office or study setting.
新しい椅子を買いました。
I bought a new desk chair.
This chair is comfortable to sit in.
A loanword from English, specifically meaning 'desk chair'. Commonly used in office supply contexts or when emphasizing the type of chair.
Assemble the desk chair.
Literally 'office chair'. Often used interchangeably with デスクチェア, but may imply a more professional or ergonomic chair.
I'm looking for an office chair.
A chair used by a student at a desk for studying, often at home.
In Japanese, simply saying 椅子 (isu) is often enough when the context makes it clear you mean a desk chair. Adding デスク or オフィス is more specific but not always necessary.